JP2021041886A - Cushion device for caster - Google Patents
Cushion device for caster Download PDFInfo
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- JP2021041886A JP2021041886A JP2019167093A JP2019167093A JP2021041886A JP 2021041886 A JP2021041886 A JP 2021041886A JP 2019167093 A JP2019167093 A JP 2019167093A JP 2019167093 A JP2019167093 A JP 2019167093A JP 2021041886 A JP2021041886 A JP 2021041886A
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- 238000003780 insertion Methods 0.000 claims abstract description 8
- 230000037431 insertion Effects 0.000 claims abstract description 8
- 230000001174 ascending effect Effects 0.000 claims description 5
- 230000035939 shock Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
Description
本発明は、キャスターに取付けでき、且つ、走行時の異なる衝撃に応じた衝撃吸収性を発揮できるキャスター用クッション装置に関する。 The present invention relates to a caster cushioning device that can be attached to casters and can exhibit shock absorption according to different impacts during traveling.
従来、キャスターに関しては、走行中に床や路面から受ける衝撃を吸収して軽減し、移動を容易にする手段を講じたものが種々提案されている。
例えば、特許文献１（実用新案登録第３０７１２５４号）では、取付座の下にスプリングを接続し、本体と一体化し、本体を車輪中心部の車軸に接続した衝撃吸収スプリング一体型キャスターが開示されている。
Conventionally, various casters have been proposed in which measures are taken to absorb and reduce the impact received from the floor or the road surface during traveling and facilitate the movement.
For example, Patent Document 1 (utility model registration No. 3071254) discloses a shock absorbing spring-integrated caster in which a spring is connected under the mounting seat, integrated with the main body, and the main body is connected to the axle at the center of the wheel. There is.
しかしながら、特許文献１の衝撃吸収スプリング一体型キャスターにおいては、設定した範囲内の衝撃力に対しては衝撃吸収性が発揮されるが、それより弱い衝撃、あるいはそれより強い衝撃に対してクッション効果が発揮できない問題点を有していた。
つまり、１個のスプリングは、一定の剛性（バネ定数）に設定されており、その設定された剛性の範囲内で使用され、そのスプリングに加わる衝撃力が設定したバネ定数から外れると、全くクッション効果が発揮できなくなる。
従って、特許文献１のキャスターでは、１個のスプリングが使用されているので、そのスプリングのバネ定数の範囲内のクッション効果しか発揮できない問題点がある。
However, in the impact absorbing spring integrated caster of
That is, one spring is set to a constant rigidity (spring constant), is used within the set rigidity range, and when the impact force applied to the spring deviates from the set spring constant, it completely cushions. The effect cannot be exhibited.
Therefore, since one spring is used in the caster of
本発明は上記の問題点に鑑み、キャスターが走行中に受ける大小の衝撃力を広範囲に吸収できるキャスター用クッション装置提供することを目的とする。 In view of the above problems, an object of the present invention is to provide a cushion device for casters capable of absorbing a wide range of large and small impact forces received by casters during traveling.
本発明は、上部に突出する取付ネジを有するキャスター（Ａ）に取付けるキャスター用クション装置であって、
底部（１１）を有するバネ収容筒本体（１）と、その底部（１１）に設けた挿通穴（１１a）に摺動自在に挿通した取付軸体（２）と、この取付軸体（２）と固着し前記バネ収容筒本体（１）内の下部に収納したバネ押し盤（３）と、前記バネ収容筒本体（１）内に同心円状で収納した複数のコイルバネ（４）と、前記バネ収容筒本体（１）の上部に設けた蓋板（５）とから少なくとも成り、且つ、前記各コイルバネ（４）は、そのバネ定数を異にすると共に、バネ定数の小さい順に衝撃力を吸収するように収納し、更に、前記取付軸体（２）の下端側に取付用ネジ穴（２ａ）を形成したことを特徴とする。
The present invention is a caster action device for mounting on a caster (A) having a mounting screw protruding upward.
A spring accommodating cylinder body (1) having a bottom portion (11), a mounting shaft body (2) slidably inserted into an insertion hole (11a) provided in the bottom portion (11), and the mounting shaft body (2). A spring pusher (3) housed in the lower part of the spring accommodating cylinder body (1), a plurality of coil springs (4) concentrically stored in the spring accommodating cylinder body (1), and the spring. Each coil spring (4) is composed of at least a lid plate (5) provided on the upper part of the accommodating cylinder main body (1), and each of the coil springs (4) has a different spring constant and absorbs an impact force in ascending order of the spring constant. It is characterized in that the mounting screw hole (2a) is formed on the lower end side of the mounting shaft body (2).
また、複数の前記コイルバネ（４）の内で、バネ定数の最も小さい前記コイルバネ（４）が、前記バネ押し盤（３）と前記蓋板（５）の間に弾発的に設けて最初に衝撃力を吸収するように収納し、他の前記コイルバネ（４）は前記蓋板（５）から適宜離して設けるのがよい。 Further, among the plurality of coil springs (4), the coil spring (4) having the smallest spring constant is elastically provided between the spring pusher (3) and the lid plate (5) first. It is preferable that the coil spring (4) is housed so as to absorb the impact force, and the other coil spring (4) is appropriately separated from the lid plate (5).
また、前記コイルバネ（４）が、内コイルバネ（４ａ）と外コイルバネ（４ｂ）との２個から成り、その内コイルバネ（４ａ）のバネ定数が前記外コイルバネ（４ｂ）よりも小さくし、且つ、前記内コイルバネ（４ａ）を前記バネ押し盤（３）と前記蓋板（５）の間に弾発的に設けると共に、外コイルバネ（４ｂ）を前記蓋板（５）から離して設けるのがよい。 Further, the coil spring (4) is composed of two inner coil springs (4a) and outer coil springs (4b), and the spring constant of the inner coil springs (4a) is smaller than that of the outer coil springs (4b). It is preferable that the inner coil spring (4a) is elastically provided between the spring pusher (3) and the lid plate (5), and the outer coil spring (4b) is provided away from the lid plate (5). ..
また、前記内コイルバネ（４ａ）と前記外コイルバネ（４ｂ）のバネ定数が、内コイルバネ（４ａ）が５〜３０Ｎ/mmであり、外コイルバネ（４ｂ）が２０〜１００Ｎ/mmであるのがよい。 Further, the spring constants of the inner coil spring (4a) and the outer coil spring (4b) are preferably 5 to 30 N / mm for the inner coil spring (4a) and 20 to 100 N / mm for the outer coil spring (4b). ..
本発明は、前記バネ収容筒本体（１）内に同心円状で収納した複数のコイルバネ（４）と、前記バネ収容筒本体（１）の上部に設けた蓋板（５）とから少なくとも成り、且つ、前記各コイルバネ（４）は、そのバネ定数を異にすると共に、バネ定数の最も小さい前記コイルバネ（４）が、衝撃力を最初に吸収するように前記バネ収容筒本体（１）内に収納したことにより、キャスターからの衝撃力に対し、その衝撃吸収性の範囲が広く、２個のコイルバネ（４）を使用した場合、弱い衝撃力に対しては、バネ定数の小さい内コイルバネ（４ａ）の方で吸収し、大きな衝撃力は全部のコイルバネ（４ａ）、（４ｂ）で吸収することができ、衝撃力の強弱に対して、その衝撃を吸収する範囲が広くクッション性がよい。 The present invention comprises at least a plurality of coil springs (4) concentrically stored in the spring accommodating cylinder main body (1) and a lid plate (5) provided on the upper portion of the spring accommodating cylinder main body (1). Moreover, each of the coil springs (4) has a different spring constant, and the coil spring (4) having the smallest spring constant is inside the spring accommodating cylinder body (1) so as to absorb the impact force first. By storing, the range of shock absorption is wide against the impact force from the casters, and when two coil springs (4) are used, the inner coil spring (4a) with a small spring constant is used against a weak impact force. ), And a large impact force can be absorbed by all the coil springs (4a) and (4b), and the range of absorbing the impact is wide and the cushioning property is good with respect to the strength of the impact force.
以下、図１〜図３に基づき本発明の実施形態を説明する。
図１に示すように、（１）は底部（１１）を有する円筒状のバネ収容筒本体であり、底部（１１）の中央に挿通穴（１１ａ）を穿設している。
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3.
As shown in FIG. 1, (1) is a cylindrical spring accommodating cylinder main body having a bottom portion (11), and an insertion hole (11a) is bored in the center of the bottom portion (11).
（２）は挿通穴（１１ａ）に摺動自在に挿通した取付軸体であり、その下端面にキャスター（Ａ）の取付ネジと螺合する取付用ネジ穴（２ａ）を形成している。 Reference numeral (2) is a mounting shaft body slidably inserted into the insertion hole (11a), and a mounting screw hole (2a) screwed with the mounting screw of the caster (A) is formed on the lower end surface thereof.
（３）はバネ収容筒本体（１）内の下部に移動自在に収納し、且つ、取付軸体（２）に固着したバネ押し盤であり、このバネ押し盤（３）は、キャスターからの衝撃力を受けて、後述するコイルバネ（４）を下から押し圧してコイルバネ（４）に作用してクッション性を発揮させるものであり、円盤状のものであるが、図３に示す如く、外周側を上方に折曲したカップ状にするのがよく、バネ押し盤（３）の移動がより安定し水平状態で上下移動できる。 (3) is a spring pusher that is movably stored in the lower part of the spring accommodating cylinder body (1) and is fixed to the mounting shaft (2), and the spring pusher (3) is from a caster. It receives an impact force and presses the coil spring (4), which will be described later, from below to act on the coil spring (4) to exert cushioning properties. It is preferable to make a cup shape with the side bent upward, and the movement of the spring pusher (3) is more stable and can be moved up and down in a horizontal state.
（４）はバネ収容筒本体（１）内に同心円状で収納した複数のコイルバネであり、前記各コイルバネ（４）は、そのバネ定数を異にすると共に、バネ定数の最も小さい前記コイルバネ（４）が、バネ収容筒本体（１）内に弾発的に収納され、他のコイルバネ（４）は蓋板（５）に当接せず隙間を有し、バネ定数の大きい順に隙間を多くして収納している。
要するに、バネ押し盤（３）と蓋板（５）との間に収納した複数のコイルバネ（４）の内で、バネ定数が最も小さいものがバネ押し盤（３）と蓋板（５）に当接して圧縮状態で弾発的に収納され、他の物は蓋板（５）に当接していない状態で適宜離して収納している。
これにより、各コイルバネ（４）は、バネ定数が最も小さいものが衝撃力を最初に吸収し、次にバネ定数が小さい順に衝撃力を吸収するようにしている。
(4) is a plurality of coil springs concentrically stored in the spring accommodating cylinder main body (1), and each coil spring (4) has a different spring constant and the coil spring (4) having the smallest spring constant. ) Is elastically stored in the spring accommodating cylinder body (1), and the other coil springs (4) do not abut on the lid plate (5) and have a gap. Is stored.
In short, among the plurality of coil springs (4) housed between the spring pusher (3) and the lid plate (5), the one with the smallest spring constant is the spring pusher (3) and the lid plate (5). It is abutted and elastically stored in a compressed state, and other objects are stored separately from each other in a state where they are not in contact with the lid plate (5).
As a result, in each coil spring (4), the one having the smallest spring constant absorbs the impact force first, and then the one having the smallest spring constant absorbs the impact force in ascending order.
コイルバネ（４）の具体的な収納方法としては、図１，図４の如く、２個の内コイルバネ（４ａ）と外コイルバネ（４ｂ）を使用した場合、その内でバネ定数が小さい方の内コイルバネ（４ａ）を内側に、それよりもバネ定数が大きい外コイルバネ（４b）を外側に収納するのがよく、内コイルバネ（４ａ）は弾発的に収納され、衝撃力を内コイルバネ（４ａ）の方が先に吸収し、内コイルバネ（４ａ）では吸収できない強い衝撃力に対しては外側の外コイルバネ（４ｂ）も作動し、内コイルバネ（４ａ）と外コイルバネ（４ｂ）とで吸収するようにしている。
従って、弱い衝撃力の場合、それが内側の内コイルバネ（４ａ）の剛性（バネ定数）範囲以内ならば内コイルバネ（４ａ）で吸収し、内コイルバネ（４ａ）で吸収できない強い衝撃力の場合は、内コイルバネ（４ａ）が大きく圧縮されて外側の外コイルバネ（４ｂ）も蓋板（５）に当接して弾性的に作動し、内コイルバネ（４ａ ）、外コイルバネ（４ｂ）とで強い衝撃力を吸収する。
また、内コイルバネ（４ａ）と外コイルバネ（４ｂ）のバネ定数が、内コイルバネ（４ａ）が５〜３０Ｎ/mm、外コイルバネ（４ｂ）が２０〜１００Ｎ/mmとするのがよく、このバネ定数では内コイルバネ（４ａ）は比較的小さい衝撃に対応でき、外コイルバネ（４ｂ）は大きな衝撃に対応出来るようにしている。
As a specific storage method of the coil spring (4), when two inner coil springs (4a) and an outer coil spring (4b) are used as shown in FIGS. 1 and 4, the one having the smaller spring constant is among them. It is preferable to store the coil spring (4a) on the inside and the outer coil spring (4b) having a larger spring constant on the outside. The inner coil spring (4a) is elastically stored and the impact force is applied to the inner coil spring (4a). The outer coil spring (4b) also operates against a strong impact force that cannot be absorbed by the inner coil spring (4a), and the inner coil spring (4a) and the outer coil spring (4b) absorb it. I have to.
Therefore, in the case of a weak impact force, if it is within the rigidity (spring constant) range of the inner inner coil spring (4a), it is absorbed by the inner coil spring (4a), and if it is a strong impact force that cannot be absorbed by the inner coil spring (4a). , The inner coil spring (4a) is greatly compressed, and the outer outer coil spring (4b) also comes into contact with the lid plate (5) and operates elastically, and the inner coil spring (4a) and the outer coil spring (4b) exert a strong impact force. To absorb.
Further, the spring constants of the inner coil spring (4a) and the outer coil spring (4b) are preferably 5 to 30 N / mm for the inner coil spring (4a) and 20 to 100 N / mm for the outer coil spring (4b). The inner coil spring (4a) can handle a relatively small impact, and the outer coil spring (4b) can handle a large impact.
また、図示しないが、コイルバネ（４）が３個では、上記した２個の内コイルバネ（４ａ）と外コイルバネ（４ｂ）の外側に、更に外コイルバネ（４ｂ）よりもバネ定数の大きく、しかも長さの短いものを１個追加すればよく、２個よりも吸収できる衝撃力の範囲が大きくできる。 Further, although not shown, when three coil springs (4) are used, the spring constant is larger and longer than the outer coil springs (4b) on the outside of the two inner coil springs (4a) and the outer coil springs (4b) described above. It is sufficient to add one with a short length, and the range of impact force that can be absorbed can be made larger than that of two.
（５）はバネ収容筒本体（１）の上部に設けた蓋板であり、その蓋板（５）は、バネ収容筒本体（１）の外径よりも幅広な四角形状のものと、バネ収容筒本体（１）の外径と略同じの円盤状のものとがある。
そして、図２に示すように、蓋板（５）が四角形状のものは、各四隅に取付穴（５ａ）を穿設しており、他方、図５に示すように、蓋板（５）が円盤状のものは、その中央から突出する取付ネジ（６）を設けている。
これにより、本発明のクション装置を台車等に取り付けるのに、取付穴（５ａ）を利用したボルト締めによる取付け、又は取付ネジ（６）を螺合した取付けができる。
(5) is a lid plate provided on the upper part of the spring accommodating cylinder main body (1), and the lid plate (5) has a square shape wider than the outer diameter of the spring accommodating cylinder main body (1) and a spring. There is a disk-shaped one that has substantially the same outer diameter as the housing cylinder body (1).
Then, as shown in FIG. 2, in the case where the lid plate (5) has a quadrangular shape, mounting holes (5a) are bored at each four corners, and on the other hand, as shown in FIG. 5, the lid plate (5) However, the disk-shaped one is provided with a mounting screw (6) protruding from the center thereof.
Thereby, in order to attach the action device of the present invention to a trolley or the like, it is possible to attach by bolting using the attachment hole (5a) or by screwing the attachment screw (6).
このように、本発明のキャスター用クション装置は、バネ定数の異なる複数のコイルバネ（４）を具備し、異なる衝撃に応じた衝撃吸収性を充分発揮できる。 As described above, the caster action device of the present invention includes a plurality of coil springs (4) having different spring constants, and can sufficiently exhibit shock absorption in response to different shocks.
１ バネ収容筒本体
１１ 底部
１１a 挿通穴
２ 取付軸体
３ バネ押し盤
４ コイルバネ
４ａ 内コイルバネ
４ｂ 外コイルバネ
５ 蓋板
Ａ キャスター
1 Spring accommodating
本発明は、上部に突出する取付ネジを有するキャスター（Ａ）に取付けるキャスター用クション装置であって、
底部（１１）を有するバネ収容筒本体（１）と、その底部（１１）に設けた挿通穴（１１a）に摺動自在に挿通した取付軸体（２）と、この取付軸体（２）と固着し前記バネ収容筒本体（１）内の下部に収納したバネ押し盤（３）と、前記バネ収容筒本体（１）内に同心円状で収納した複数のコイルバネ（４）と、前記バネ収容筒本体（１）の上部に設けた蓋板（５）とから少なくとも成り、且つ、前記各コイルバネ（４）は、そのバネ定数を異にすると共に、バネ定数の小さい順に衝撃力を吸収するように収納し、更に、前記取付軸体（２）の下端側に取付用ネジ穴（２ａ）を形成し、しかも、前記蓋板（５）が、前記バネ収容筒本体（１）の外径よりも幅広で各四隅に取付穴（５ａ）を穿設した四角形状、あるいは中央から突出する取付けネジ（６）を設けた円盤状である、ことを特徴とする。
The present invention is a caster action device for mounting on a caster (A) having a mounting screw protruding upward.
A spring accommodating cylinder body (1) having a bottom portion (11), a mounting shaft body (2) slidably inserted into an insertion hole (11a) provided in the bottom portion (11), and the mounting shaft body (2). A spring pusher (3) housed in the lower part of the spring accommodating cylinder body (1), a plurality of coil springs (4) concentrically stored in the spring accommodating cylinder body (1), and the spring. Each coil spring (4) is composed of at least a lid plate (5) provided on the upper part of the accommodating cylinder main body (1), and each of the coil springs (4) has a different spring constant and absorbs an impact force in ascending order of the spring constant. Further, a mounting screw hole (2a) is formed on the lower end side of the mounting shaft body (2), and the lid plate (5) has an outer diameter of the spring accommodating cylinder body (1). It is characterized in that it is wider and has a square shape with mounting holes (5a) at each four corners, or a disk shape with mounting screws (6) protruding from the center .
本発明は、上部に突出する取付ネジを有するキャスター（Ａ）に取付けるキャスター用クション装置であって、
底部（１１）を有するバネ収容筒本体（１）と、その底部（１１）に設けた挿通穴（１１a）に摺動自在に挿通した取付軸体（２）と、この取付軸体（２）と固着し前記バネ収容筒本体（１）内の下部に収納したバネ押し盤（３）と、前記バネ収容筒本体（１）内に同心円状で収納した複数のコイルバネ（４）と、前記バネ収容筒本体（１）の上部に設けた蓋板（５）とから少なくとも成り、且つ、前記各コイルバネ（４）は、そのバネ定数を異にすると共に、バネ定数の小さい順に衝撃力を吸収するように収納し、更に、前記取付軸体（２）の下端側に取付用ネジ穴（２ａ）を形成し、しかも、前記蓋板（５）が、前記バネ収容筒本体（１）の外径よりも幅広で各四隅に取付穴（５ａ）を穿設した四角形状、あるいは中央から突出する取付けネジ（６）を設けた円盤状であり、更に前記バネ押し盤（３）が、その外周側を上方に折曲したカップ状である、ことを特徴とする。
The present invention is a caster action device for mounting on a caster (A) having a mounting screw protruding upward.
A spring accommodating cylinder body (1) having a bottom portion (11), a mounting shaft body (2) slidably inserted into an insertion hole (11a) provided in the bottom portion (11), and the mounting shaft body (2). A spring pusher (3) housed in the lower part of the spring accommodating cylinder body (1), a plurality of coil springs (4) concentrically stored in the spring accommodating cylinder body (1), and the spring. Each coil spring (4) is composed of at least a lid plate (5) provided on the upper part of the accommodating cylinder main body (1), and each of the coil springs (4) has a different spring constant and absorbs an impact force in ascending order of the spring constant. Further, a mounting screw hole (2a) is formed on the lower end side of the mounting shaft body (2), and the lid plate (5) has an outer diameter of the spring accommodating cylinder body (1). wide on each four corners mounting holes (5a) bored a rectangle shape, or Ri discoid der provided with a mounting screw (6) projecting from the center, further the spring-loaded plate (3), the outer periphery than It is characterized by having a cup shape with the side bent upward.
Claims (4)
底部（１１）を有するバネ収容筒本体（１）と、その底部（１１）に設けた挿通穴（１１a）に摺動自在に挿通した取付軸体（２）と、この取付軸体（２）と固着し前記バネ収容筒本体（１）内の下部に収納したバネ押し盤（３）と、前記バネ収容筒本体（１）内に同心円状で収納した複数のコイルバネ（４）と、前記バネ収容筒本体（１）の上部に設けた蓋板（５）とから少なくとも成り、且つ、前記各コイルバネ（４）は、そのバネ定数を異にすると共に、バネ定数の小さい順に衝撃力を吸収するように収納し、更に、前記取付軸体（２）の下端側に取付用ネジ穴（２ａ）を形成したことを特徴とするキャスター用クッション装置。 A caster action device to be mounted on a caster (A) having a mounting screw protruding from the upper part.
A spring accommodating cylinder body (1) having a bottom portion (11), a mounting shaft body (2) slidably inserted into an insertion hole (11a) provided in the bottom portion (11), and the mounting shaft body (2). A spring pusher (3) housed in the lower part of the spring accommodating cylinder body (1), a plurality of coil springs (4) concentrically stored in the spring accommodating cylinder body (1), and the spring. Each coil spring (4) is composed of at least a lid plate (5) provided on the upper part of the accommodating cylinder main body (1), and each of the coil springs (4) has a different spring constant and absorbs an impact force in ascending order of the spring constant. A caster cushioning device characterized in that a mounting screw hole (2a) is formed on the lower end side of the mounting shaft body (2).
The third aspect of claim 3, wherein the spring constants of the inner coil spring (4a) and the outer coil spring (4b) are 5 to 30 N / mm for the inner coil spring (4a) and 20 to 100 N / mm for the outer coil spring (4b). Cushion device for casters.
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| JP2019167093A JP6853444B2 (en) | 2019-09-13 | 2019-09-13 | Cushion device for casters |
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| JP2019167093A JP6853444B2 (en) | 2019-09-13 | 2019-09-13 | Cushion device for casters |
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| JP6853444B2 JP6853444B2 (en) | 2021-03-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111301057A (en) * | 2018-12-12 | 2020-06-19 | 沈阳新松机器人自动化股份有限公司 | Walking steering wheel structure with auxiliary support |
| WO2023013113A1 (en) * | 2021-08-02 | 2023-02-09 | ソニーグループ株式会社 | Mobile body and method for controlling mobile body |
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| WO2023013113A1 (en) * | 2021-08-02 | 2023-02-09 | ソニーグループ株式会社 | Mobile body and method for controlling mobile body |
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|---|---|
| JP6853444B2 (en) | 2021-03-31 |
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